# Next.js I18n

> [!NOTE]
>
> This feature is only available in the docs theme.

Nextra supports
[Next.js Internationalized Routing](https://nextjs.org/docs/advanced-features/i18n-routing)
out of the box.

To add multi-language pages to your Nextra application, just need to config
`i18n` in `next.config.mjs`:

```js filename="next.config.mjs"
import nextra from 'nextra'

const withNextra = nextra({
  theme: 'nextra-theme-docs',
  themeConfig: './theme.config.js'
})

export default withNextra({
  i18n: {
    locales: ['en', 'zh', 'de'],
    defaultLocale: 'en'
  }
})
```

Then, add the locale codes to your file extensions (required for the default
locale too):

```text
/pages
  index.en.md
  index.zh.md
  index.de.md
  meta.en.json
  meta.zh.json
  meta.de.json
  ...
```

Finally, add the `i18n` option to your `theme.config.js` to configure the
language dropdown:

```jsx filename="theme.config.js"
i18n: [
  { locale: 'en', text: 'English' },
  { locale: 'zh', text: '中文' },
  { locale: 'de', text: 'Deutsch' },
  { locale: 'ar', text: 'العربية', direction: 'rtl' }
]
```
